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Finding the Fourth Proportional to 283,596.76, 391,371.76 and 156,280.56

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Solution

The fourth proportional to 283,596.76, 391,371.76 and 156,280.56 is: 215,671.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    283,596.76 : 391,371.76 = 156,280.56 : x
  2. Step 2: Convert to fraction form
    283,596.76/391,371.76 = 156,280.56/x
  3. Step 3: Cross multiply
    283,596.76x = 391,371.76 × 156,280.56
  4. Step 4: Simplify right side
    283,596.76x = 61,163,797,820.99
  5. Step 5: Solve for x
    x = 61,163,797,820.99/283,596.76
  6. Step 6: Final answer
    x = 215,671.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.